🧪 Chemistry Calculator

Advanced chemistry calculator for molecular weight, molarity, stoichiometry, and chemical equations with step-by-step solutions

Choose the type of chemistry calculation to perform
Enter chemical formula (e.g., H2SO4, CaCl2, C6H12O6)
Enter the first numerical value for calculations
Select unit for first value
Enter the second numerical value (if needed)
Select unit for second value
Display detailed calculation steps and explanations

How to Use This Chemistry Calculator

Basic Usage:

  1. Fill in the required fields above
  2. Adjust any optional settings as needed
  3. Click the button to generate your result
  4. Copy or download the output

Tips: This chemistry calculator provides instant results and works entirely in your browser for privacy.

How It Works

Molecular Weight Calculations:

Our calculator uses precise atomic weights from NIST (National Institute of Standards and Technology) to calculate molecular weights. When you enter a chemical formula like H2SO4, the system:

  • Parses the formula to identify each element and its quantity
  • Multiplies each element's atomic weight by its count
  • Sums all values to get the total molecular weight in g/mol

Molarity & Concentration:

Calculates molarity (M) using the fundamental equation: M = n/V, where n is moles and V is volume in liters. The system automatically converts between grams and moles using molecular weight.

Stoichiometry:

Performs mole-to-mass and mass-to-mole conversions essential for balanced chemical equations and reaction yield calculations.

Gas Laws & pH Calculations:

Uses the ideal gas law (PV=nRT) and logarithmic pH calculations with proper unit conversions and step-by-step explanations.

When You Might Need This

Frequently Asked Questions

How accurate are the molecular weight calculations?

Our calculator uses precise atomic weights from NIST (National Institute of Standards and Technology) data to ensure accuracy to 4 decimal places. All calculations are validated against peer-reviewed chemistry references and undergo continuous quality assurance.

Can I use this for complex organic chemistry formulas?

Yes, our chemistry calculator handles complex organic compounds, polymers, and coordination complexes. The intelligent formula parser recognizes standard chemical notation including parentheses, brackets, and hydration numbers.